Question about ViewSonic Optiquest V655 Monitor

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Optiquest V655 Monitor no power

My
Optiquest V655 Monitor no power pls help

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Have you tried another power cable? It could be a power supply problem. Too be honest, being a 15" crt monitor it would prob be cheaper to replace the whole unit than have it diagnosed and repaired

Posted on Jan 20, 2009

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No display


Hello,

The Viewsonic VG1921wm monitor uses the same power supply board that the Optiquest Q19w uses. When that monitor has display problems like you are having the most common cause is bad capacitors on the power supply board. When the capacitors go out the power board does not put out the correct voltages to drive the back light circuits and the driver circuits so you get no display. There is a very good chance that this is the problem with your unit and it would be worth having a look at the power supply board. Here is a link to a repair guide for the Optiquest monitor and since they use the same power supply board it should help you check you board and show what needs to be replaced to repair it.

http://www.ccl-la.com/blog/index.php/how-to-repair-a-optiquest-q19wb-monitor/

I hope this helps.

Jun 20, 2012 | ViewSonic VG1921wm 19" Monitor

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Viewsonic optiquest flat panel lcd monitor power light flashes on and off with a popping niose


Look for bad caps with bulging/leaking tops as shown here:
http://s807.photobucket.com/albums/yy352/budm/OPTIQUEST/Optiquest%20Q9B/

Very common problem in all LCD monitors as you can see in my albums.

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm/

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.

Oct 26, 2011 | ViewSonic Optiquest Q9b 19" Flat Panel LCD...

1 Answer

NO POWER TO THE MONITOR


Hello,

This is usually caused by a failure of the power supply board because of capacitor failure. The board is easily repairable if you can do a little soldering. Here is a a link to a page that shows how to open the monitor, remove the power supply board and what needs to be replaced to repair the unit.

http://www.ccl-la.com/blog/index.php/how-to-repair-a-optiquest-q19wb-monitor/


I hope this helps, if so please rate my solution.

BuddyMc

Sep 14, 2011 | ViewSonic Optiquest Q19wb LCD Monitor

1 Answer

I have a optiquest Q20WB monitor when i push the power botton the green light flashes but the monitor doesnt come on.


More likley to have bad caps like other Optiquest monitors as shown in my albums.
If you are going to DIY and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed OPTIQUEST monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.

Basic LCD monitor troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting

http://en.wikipedia.org/wiki/Capacitor_plague
Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Oct 23, 2010 | Optiquest Computer Monitors

1 Answer

Monitor won't come on power light blinks off and on


Look for bad caps in the power supply as shown first, then post back what you find since it can be more serious problems.
http://s807.photobucket.com/albums/yy352/budm/Optiquest%20Q19WB/

http://en.wikipedia.org/wiki/Capacitor_plague
Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Sep 02, 2010 | ViewSonic Optiquest Q19wb LCD Monitor

1 Answer

Viewsonic Optiquest Q19wb lcd Monitor goes blank after 2 secs. A couple of posts say replace the 1000uf 16v Cap My problem is i can't find them on the pcb (where are they?)


Look at the board where the AC power connector comes in that is the power supply board, there are more than one versions so it nay not have the same caps value.
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed Viewsonic/Optiquest monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.
http://en.wikipedia.org/wiki/Capacitor_plague

http://www.badcaps.net

Post pictures or send them to me budmrtn@aol.com

May 15, 2010 | ViewSonic Optiquest Q19wb LCD Monitor

1 Answer

ViewSonic Optiquest Q7b 17" LCD Monitor has a fuzzy picture


LCD monitor needs to be fed with native resolution from the PC video out, this monitor native resolution is 1280x1024 @60Hz, try that setting to see if it helps before opening up the monitor to look for failed components.

Mar 29, 2010 | ViewSonic Optiquest Q7b Flat panel TFT 17"...

1 Answer

Optiquest q9b-2 blank white screen (lights up when powered up) no video ??no problem with computer, video fine on another monitor, tried this monitor on several computers same problem, blank white...


Often problems with LCD monitors can be traced to bad capacitors. The following sites will help you identify if your monitor has bad capacitors, and how to replace them.

www.fixyourmonitor.com and http://www.youtube.com/watch?v=9Q6_TgNJvQw

Good Luck!

Feb 06, 2010 | ViewSonic Optiquest Q19wb LCD Monitor

1 Answer

Q19wb Monitor Replacement Part Numbers Needed


Look on eBay for "Optiquest Q19wb repair" or "Optiquest Q19wb power"

This is a common failure mode. You can either buy a set of capacitors and solder them in, or buy a replacement power supply board if you cannot solder.

One eBay seller notes the power board as an ILPI-025, which is common among the following models:

Power Board ILPI-025 For LG W1934S & Viewsonic VG1930WM & Optiquest Q19WB & Acer AL1916W Ab etc
Model:ILPI-025 REV:E 79069140

May 29, 2009 | ViewSonic Optiquest Q19wb LCD Monitor

1 Answer

I have a viewsonic optiquest monitor Q20WB and buttons not workin


Sounds like that monitor has reached the end of the road. I would recommend purchasing another monitor, other than view sonic. Purchase a Dell..they are great!

May 13, 2009 | ViewSonic Optiquest Q19wb LCD Monitor

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